conf, tap: Split netlink and pasta functions, allow interface configuration

Move netlink routines to their own file, and use netlink to configure
or fetch all the information we need, except for the TUNSETIFF ioctl.

Move pasta-specific functions to their own file as well, add
parameters and calls to configure the tap interface in the namespace.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/util.c b/util.c
index 2a5c5ee..8b4d669 100644
--- a/util.c
+++ b/util.c
@@ -172,7 +172,7 @@ int sock_l4(struct ctx *c, int af, uint8_t proto, uint16_t port,
 			addr6.sin6_addr = c->addr6;
 		} else if (bind_addr == BIND_LL) {
 			addr6.sin6_addr = c->addr6_ll;
-			addr6.sin6_scope_id = if_nametoindex(c->ifn);
+			addr6.sin6_scope_id = c->ifi;
 		} else {
 			addr6.sin6_addr = in6addr_any;
 		}